Shift summary for DAY shift 9/Jan/2000

Subject: Shift summary for DAY shift 9/Jan/2000
From: Vivian O'Dell (
Date: Fri Feb 04 2000 - 15:11:46 CST

                     Shift summary for day shift 9/Jan/2000

On Shift: PG, AA

Hours of beam available at all intensities: 6.5
Hours of beam available at nominal intensity: 6.5
Hours of E799 data (special runs not included): 6.5
Hours of special runs (laser scans, muon runs...): 0.0

Accounting of lost time:

A TeV magnet quench. Starting and Stopping runs, KFREND's.

Tapes brought to FCC this shift:


Accesses during shift: Two

Jason and Philippe twice to swap an ET controller.
Ashkan and Philippe to check on the bad DCOR2Y power supply.

Runs ended this shift:

15445 - 6.3M - BEAM_799
15446 - 1.7M - BEAM_799

Overview of shift:

E799 data-taking.


Description of Shift:

run spill time comment

15445 8 07:15 ktevana error followed by pipeline errors. Reset
                       the pipeline and KFREND.

          21 07:41 Trigger hangs, KFREND.

        69-71 08:37 Etotal temperature error, hcc error and trigger
                       hangs. Reload ETOT maps + a number of KFREND's.
                08:45 The ET temp error persists, page Jason H.

       121-123 09:48 Trigger hangs, KFREND.

                10:00 Onsplit tape UPM056 mounted on ktev1.

           141 10:13 Quench at D3, est 1hr. Page people on the list.
           147 10:22 Stop the run. Update Ped and Csi constants.

15446 1 11:06 Start the run, no beam.

                11:24 JH and PG go on access to replace ET controller #6
                       in BW crate #4. But JH unhappy with the result,
                       they go to swap it back.
                       AA and PG on access to check on bad DCOR PS
                       channel. Turned out to be a monitoring problem and
                       got fixed.

                11:45 LB swaps an ADC module.

            48 12:11 Beam returns.

         65-68 12:35 Trigger hangs, KFREND's.

            70 12:39 ktevana error, KFREND.
            87 13:02 Stop the run due to L3 accept fraction errors.

15447 1 13:12 Start the run.

                14:11 onsplit tape UPF076 mounted on ktev4.

            71 14:48 TRD plane 2 tripped off.

Items to Follow up from previous Shift

  DCOR2Y LV power supply for DC2 read out is fixed.

  Philippe labeled 28 QKE tapes for short reg run and other special runs

Items to Follow up on Next Shift

  Don't forget to hit "reset quartz" button after each KFREND.

  If beam goes away for more than an hour (non-owl) page people listed on
  page 214 of the logbook.

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